We dont have neighbours near enough to cause any wifi conflicts

In reply to a post by ian72:

Do you get more than 50Mbps on a direct wired device?

yes 70+ plus as you would expect.

The wifi speed was so low even on installation (44Mbps) that the Openreach engineer ran more tests before I fetched my laptop and connected via ethernet and found that speed was ok.

it could not only be the router it could be your devices.

how old are your mobile devices and laptops?

In reply to a post by Highland76:

Are you using the AAISP supplied Zyxel router? If so then hardly surprising you’re having Wi-fi issues as the Wi-fi range on them is quite poor. As Mr S has suggested buy a half decent Wi-fi router such as the Netgear R8000 - no need to buy router with a modem built in for FTTP. Only go for a mesh system or additional access points if a single router doesn’t cut it.

The coverage of the router is actually not too bad, having lost half the speed in the immediate vicinity is still gives me near 40Mbps in my office one floor , two walls and 10 metres away and the full 20Mbps upload speed.

However even close to the router VOIP and wifi calling are awful so changing the router might solve that problem if its a dodgy router. If it doesnt than it looks like i will have to reinstate the landline

In reply to a post by gerarda:

The wifi speed was so low even on installation (44Mbps) that the Openreach engineer ran more tests before I fetched my laptop and connected via ethernet and found that speed was ok.

Does it support dual band? It may be only 2.4 GHz and N (WiFi 4) specification. That would explain the 40 Mbps limit. A separate access point, or mesh system (which are super intelligent access points) will solve your problem.

In reply to a post by MrSaffron:

People sourcing their own routers for FTTP services is not unusual at all.

The Netgear Nighthawk routers generally have a good wifi reputation https://amzn.to/3dnPs7r

Question is what is your budget

Unfortunately the budget is zero , I wasn't expecting to have to change after a year.